Nut-lock.



M. JANKIEWICZ.

NUT LOCK.

APPLICATION FILED MAY 23 |919.

1,320,865. ff Patented Nov. 4, 1919.

3,/ NvENToR 20g w/zi la7 Mingnel Junk-Lewin w/ @0 s a N MM .er` la e ATTORNEY A narran srarns narrar carica.

Yattenant Jankrnwioz, or ELMH-Unsr, NEW YORK.

TaZZ 'whom tf/)mtybenoemt:i` j Be it known that I, MrorrAnL lJenninl wioz, a citizen of Russia, residing at Elmhurst, county of Queens, and State of New York, have invented certain` new and useful Improvements-in Nut-Locks, of whichltheV following is a specification.

' lThis invention relates to improvements y cover plate.

in nut locks, .andV its principal object resides in the provision of a secure fastening means for preventing nuts frombacking oil" of bolts,

and the like.

Another obj ect of the invention resides in the prov1s1on-of a means for releasing the locking means in order to permit the nut to be removed.

With these and other objects in view, as will become apparent as the description proceeds, the invention consists in thenovel construction, combination and arrangement Fig. 4: is a sectional view on line 4 1 ofV Fig. 2.

Fig.` 5 is a detail Fig. 6 is a detail perspective' view of the releasing ring, and, l

Fig. 7 is al detail perspective view of one fof the locking dogs. Y

Fig. 8 is a -detail view, partly in section of the plimger and the parts coperating therewith.

Y Referring to the drawings in detail, the numeral 10 designates a nut provided with the usual screw threaded aperture v1l.

circular recesses for the reception of the barrels of the locking dogs.

Apertures 16 arranged perpendicularlyy opposite face is arranged radial tothe Vbar- Y Specification of Letters Patent.

perspective view of the A plurality of radially disposed recesses 12 are formed in one end faceof the nut, these recessesterniinating at their outer ends 1n NUT-LOCK.

Patented Nov.v 4, 1919.

Apfplcationled May 1919. SerialA No. 229,180.

rel. As shown in Fig.` 3 the barrels of these locking dogs are pivotally mounted inthe recesses 14 while the tongues project through the recesses 12 and partially into the threaded aperture 11. It will be noted that the outer end face 2l of each of the tongues is beveledto form a relatively` sharp edge which" will bite into the threads on a bolt whenlthe device` is locked. A

A `cover plate'22 is adapted to be secured tothe recessed end of thenut 10 by means of suitable screws 23. This plate is formed with a central aperture 24.4 which alines with the aperture ll of the nut when the plate is in place, and an annular groove 25 is formed in the inner faceV of said plate to accommodate the releasing ring shown in Fig. 6. An arcuate slot 26 is formed in the plate between the inner and outer walls of the groove 25 and is adapted to receive the stem by means -of which the releasing ring is manipulated.

The releasing ring previously referred to is best illustrated in Fig. 6 and comprises a ring 27 having formed integral therewith av plurality of spaced radial arms 28. One of these arms has secured to its outer face a barrel 29 formed with a bore 30 which alines with an aperture 31 formed in the arm to which the barrel is secured.

A plunger 32 is slidable in Jthe bore 30 and Y isnormally urged inwardly toward the nut by means of a spring 33. 'A plurality of springs 34 are arranged in the apertures 16 in the nut and are adapted to yieldingly hold the locking dogs in position to engage the shank of a bolt, while pins 35 are secured in the outer ends of the" locking dogs, and are adapted to be engaged by the radial arms 28 on the ring 27 when theV same is rotated to release the lock.

In operation it will be understood that the device is assembled in the manner illustrated inFigs. 1 and 2. The nut may then be threaded upon a bolt and as long as the nut is turned in a direction to feed the same on the bolt it is free to rotate. As soon, however, as an attempt is made to back the nut oli1 of the bolt it will be seen that the dogs 18 will bite into the bolt and hold the nut against rotation.

i When it is desired to remove the nut the plunger 32' is moved against the pressure of the spring 33 and out of the aperture 36 and the ring 27 is given a partial rotation, thus causing the arms 28 to engage the pins 35 and release the dogs so the nut may be released. It Will be understood that the plunger may be permitted to enter the other apertures 37 and thus the ring will be held 10 changes in the construction, combination and arrangement of parts may be resorted to Without departing from the spirit and scope of the invention as claimed.

" What I claim as new and desire to secure i5 by Letters Patent, is:

A nut lool; comprising a nut body having aV threaded aperture therethrough and radial recesses communicating With the ap- Copes of this patntfmay be obtained for five cents each, by addressing the Commissioner of Elements,`

headset erture, locking dogs pivoted in the recesses,

springs urgingl said dogs into locking position, pins carried at the outer ends of said dogs, a plate secured to the recessed end of said body, said plate having an annular groove thereinto accommodate the pins, a ring rotatable in the groove, arms on the ring to engage said pins upon rotation of the ring, a barrel on one of said arms, and aspring-oontrolled plunger adapted to enter said barrel, and a bore inoneof said arms, to move the ring and also adapted to enter another bore in one of said arms to hold said ring against accidental movement.

In testimony whereof I have aiixed my signature. Y l

ixrioiinniiy JANKIEWICZ;

Washington, D. C. 

